外研版高中英語必修第三冊單元測試題Unit 3

外研版高中英語必修第三冊單元測試題Unit3Unit3Theworldofscience時(shí)間：100分鐘滿分：120分選擇題部分第二部分閱讀理解(共兩節(jié)，滿分40分)第一節(jié)(共15小題；每小題2分，滿分30分)閱讀下列短文，從每題所給的A、B、C和D四個(gè)選項(xiàng)中，選出最佳選項(xiàng)。AEarthquakerescuerobotshaveexperiencedtheirfinaltestsinBeijing.Theirdesignerssaythatwiththeserobots,rescueworkerswillbeabletohavemoretimetosavemorelivesduringanearthquake.Thisrobotlookinglikeahelicopter(直升機(jī)),iscalledthedetector-bot.It’sabout4meterslong,andittookabout4yearstodevelopthemodel.Itsmainfunctions(作用)aretocollectinformationfromtheair,andsendgoodsofupto30kilos,topeoplestuckinanearthquake.Thisrobothasahighquality360degreepanoramiccamera.Itcanworkdayandnightandwillalsobeabletosendthelatestpicturesfromthequakearea.Dr.QiJuntong,ChineseAcademyofScience,said,“Unlikeotherautomaticmachines,themostimportantfeatureofthisrobotisthatitdoesn’tneedadistantcontrol.Wejustsettheinformationoftheearthquake-struckareaonit,andthenittakesoff,andlandsbyitself.Itfliesashighas3,000meters,andasfastas100kilometersperhour.”Thisrobothasadifferentfunction—itcanchangeastheenvironmentchanges.Itsmainjobistosearchforanysignsoflifeinplaceswherehumanrescuersareunabletogo.Aswellasadetector(探測器)thatfindsvictims(遇難者)anddetectspoisonousgas,acameraisplacedinthe40-centimeter-longrobot,whichcanworkinthedark.Anotherusefortherescuersisthesupplybot,withits10-meter-longpipe.Peoplewhoarecaughtintheruinswillbeabletogetsuppliesincludingoxygenandliquids.Expertshavesaidthattherobotswillenterproduction,andserveaspartofthenationalearthquakerescueteamassoonasnextyear.1.Whichofthefollowingstatementsabouttherobotistrueaccordingtothepassage?A.Ithasn’tbeenputintoproductionsofar.B.Itisamachinewithalengthof10meters.C.Itisamachinecarriedbyahelicopter.D.Itweighsabout30kilos.2.Dr.QiJuntongthinksthisrobotisdifferentfromtheothersmainlybecause______.

A.ithasmorefunctionsB.ithasamoreadvancedcameraC.itcanchangeastheenvironmentchangesD.itcanworkbyitselfoncegiventheinformation3.Theunderlinedword“which”inparagraph5refersto______.

A.acamera B.adetectorC.arescuer D.adoctorBTeenagersinAmericaknowthatthey’llpossiblyneedtechnicalskillstofindgoodjobs,butanewsurveyrevealsthatinterestintechnology-relatedcareersmaybedecreasing.Thepercentageofboysaged13to17whoareinterestedinscience,technology,engineeringandmathorSTEMcareersdroppedfrom36percentin2017to24percentthisyear,accordingtoasurveybyJuniorAchievementUSA.TheamountofgirlsinterestedinSTEMcareersstayedunchanged.Butthe1,000surveyparticipantsstillnamedtechnologyasoneoftwokeyskillsthatwillbenecessarytopreparethemfortheirfuturecareers.“Kidsdon’tunderstandhowtechnologycanbeappliedtocareersinadditiontocomputers,andmayberobotics,”saidTammeraL.Holmes,presidentofaviationconsultingfirmAeroStarConsulting(航空咨詢公司).“That’salltheyknow,sotheycan’treallytranslatethatinteresttocareerpathways.”WhenHolmeswasinhighschool,hermomsenthertoaneventthatfeatured(以……為專題)thepilotsfromWorldWarⅡ.Oneofthepilotstookherforarideandlethertakethewheel.“Immediatelythatwasthecareerforme,”shesaid.Womenremainoutnumbered(超過)bymeninfieldsliketechnology.Forpeopleworkingtoincreasethenumberofwomenintheseareas,thelackofgrowthingirls,interestinSTEMcareersisconcerning.Teenagegirlsaremoreinterestedthantheirmaleclassmatesinrunningaftercareersinwhichtheycanhelpothers,saidEdGrocholskifromJuniorAchievement.Evenwithalltheprogramsaimedatincreasinggirls’interestinSTEM,“Idon’tthinkwereallytalkthatmuchabouthowweimprovepeople’slivesthroughSTEM,”Grocholskisaid.Societyneedstodobetteratmakingthoseconnectionsforkids,saidKatherineLatham,founderofanengineeringfirm.Sheusedcivilengineeringasanexampleofacareerthatwillcontinuetobeimportant.However,thefactthatstudentsknowtheywillneedtechskillsintheirfuturecareersisencouraging.Thesecondskilltheysaidtheyneedisrelationship-building.“That’sgoingtobethenewtypeofengineers,”Lathamsaid.4.Whatisthepassagemainlyabout?A.Somesuccessfulexamplesofkidschoosingtechcareers.B.Reasonsbehindteenagers,decreasinginterestintechcareers.C.ThedifferenceinchoiceofjobsbetweenboysandgirlsinAmerica.D.Thepopularityoftechcareersamongkidsanditsreasons.5.Whatisthereasonbehindkids’losinginterestintechcareers?A.Theyseetechcareersasboring.B.Theyfindtechskillslessimportantthanbefore.C.Theydon’tthinktechcareerscanbringrewards.D.Theycan’tconnecttheirtechinterestwithfuturecareers.6.WhatcanwelearnfromGrocholski’swords?A.STEMcareershavenothingtodowithpeople’slives.B.TeenagegirlsareinterestedinrunningafterSTEMcareers.C.TherelationshipbetweenSTEMcareersandtheimprovementofpeople’slivesisn’texplainedenough.D.Teenagersdon’tknowhowtoimprovepeople’slivesthroughSTEM.7.WhatarousedHolmes’interestinhercareer?A.Asummercampforpilots.B.Herparents’wishforher.C.Areportaboutthelifeofpilots.D.Herflightexperiencewithapilot.CImaginearelayrace.Duringthisrace,anathleteholdsastickasherunsacertaindistance.Thenhepassesthesticktothenextrunner.Thatpersonrunsfaster,andthenpassesthesticktoathirdrunner.Nowimaginethattherunnersdonotpassastick.Insteadtheypassshinysilk,aswellasgold,fruit,andglass.Imaginethattheracedoesnotmoveforwardinjustonedirection.Insteadtherunnersgobackandforthalongaroad.Theytradegoodsallalongthisroute(路線)andateachendofit.Nowimaginethattherunnersarebusinessmen.Theyleadcaravans(商隊(duì))orlinesofcamelsthatcarrythingstosell.TheytravelontheancientSilkRoadtoearntheirliving.TheSilkRoadwasacomplextradenetwork.Itpassedthroughthousandsofcitiesandtowns.ItstretchedfromeasternChina,acrosscentralAsiaandtheMiddleEast,totheMediterraneanSea.BusinessmentraveledontheSilkRoadfromabout200B.C.toabout1300A.D.Thenseatravelbegantooffernewroutes.SomepeoplecalledtheSilkRoadtheworld’slongesthighway.However,theSilkRoadincludedmanyroutes—notjustonesmoothpath.Theroutesranthroughmountainsandacrossdeserts.Theypassedthroughanareathatnowincludes18countries.TheSilkRoadhadmanydangers.Thesedangersrangedfromhotsunanddeepsnowtothievesandwars.Onlyexperttraderscouldsurvive.TheSilkRoadgotitsnamefromitsmostprizedgoods.Peopleusedsilkasmoney.Theycouldpaytaxesorbuygoodswithit.Traderscarriedmorethanjustsilk,though.Theyhadgold,silver,andglassfromEurope.PeopleintheMiddleEastandAsiawantedthesethings.Businessmenalsotookhorsesfromflat,grassyareasincentralAsiaandbroughtthemtoChinaandotherareas.Thehorseschangedthewaypeoplefarmedandrantheirarmies.Indianbusinessmentradedsaltandrare,beautifulstones.Chinesemerchantstradedmedicineandchina.Theyalsotradedpaper,whichquicklyreplacedanimalskinsinthewest.BusinessmencarriedapplesfromcentralAsiatoRome.TheChinesehadlearnedtocombinedifferenttreestocreatenewkindsoffruit.Theytaughtthissciencetoothers,suchastheRomans.TheRomansbegantogrowapplesforfood.TheSilkRoadledtoworldwidecommerce2,000yearsbeforetheWorldWideWeb.ThepeoplealongtheSilkRoaddidnotshareonlygoods.Theyalsosharedbeliefs.Monks,priests,andotherfaithleaderstaughttheirreligionstoothers.TheSilkRoadcreatedpathwaysforknowledge,diplomacy,andreligion.8.Inwhichcolumnofanewspapercanwemostprobablyreadthearticle?A.Science. B.Travel.C.Sports. D.Culture.9.Peopleturnedtotheseafornewroutesafteraround1300A.D.because______.

A.theSilkRoadincludedmanyroutesB.theSilkRoadpassedthroughmanyareasC.peopletraveledontheSilkRoadfortoolongD.thereweremoredangersalongtheSilkRoad10.Whichofthefollowingisclosesttothemeaningoftheword“prized”inParagraph3?A.appropriate B.preservedC.valuable D.useful11.WhichofthefollowingstatementsisWRONG?A.TheSilkRoadhelpedspreadreligionstomorepeople.B.TheSilkRoadgavepeopletheideatobuildhighways.C.Somepeopleprobablydiedwhiletravelling.D.Westernersprobablyusedtowriteonanimalskins.DUSSpaceAgencyReturnstoMarswithInSightLanderTheAmericanspaceagency’slanderInSightistoarriveonMarsattheendofNovember,2018.UnlikeNASA’sCuriosityrover,InSightwillnotmoveacrosstheplanet’ssurface.Insteaditwillbecomethefirstspacecraft(航天器)usedonlyforexploringunderground.ItwillstudythegeographyofMars,searchingforsignsofMartian(火星的)quakes.InSightisaprojectofU.S.andEurope.Itis6meterslongand1.5meterswide.Itweighs360kilograms.InSight’s1.8-meterroboticarmwillputtwoexperimentsinplace.BotharedesignedtoexploreundergroundofMarstolearnabouttheinside.BruceBanerdtistheleadscientistforInSight.Heviewedthespacecraftasarobotthatcantakecareofitself.“It’sgotitsownbrain.It’sgotanarm.Itcanlistenandfeelthings.Itpullsitsownpoweroutofthesun,”henoted.ThomasZurbuchen,oneoftheheadsinNASA,saidtheresultsoftheInSightprojectcould“changethewaywethinkabouttheinsideofourearth.”But,first,InSightwillhavetolandonMarsundamaged.SinceMarsexplorationstartedinthe1960s,onlyabout40percentoftheexplorationshavesucceeded.TomHoffmanisInSight’sprojectmanager.Hesaidearliersuccessesdonotlessentheconcernsforeachnewexploration.“Thatwe’vedoneitbeforedoesn’tmeanwe’renotnervousandexcitedaboutdoingitagain,”hesaid.InSightwillentertheMartianatmosphere(大氣層)travelingat19,800kilometersanhour.ItwillslowforlandingonawideflatareaonMars.Ifallgoeswell,InSightcouldcarryoutitsexperimentsinabout10weeks.TheInSightprojectisexpectedtocontinueforoneMartianyear,abouttwoyearsonEarth.12.Whatcanwelearnfromthepassage?A.InSighttravelsatanunchangedspeed.B.InSightistheprojectofAmericaandJapan.C.InSighthasthefunctions(功能)ofarobot.D.InSightismainlypoweredbythenaturalgas.13.Whatwillbeoneofthecontributions(貢獻(xiàn))oftheInSightprojectaccordingtoZurbuchen?A.ItwillhelpusunderstandthegeographyofMars.B.Itwillchangethewaywethinkabouttheinsideoftheearth.C.ItwillhelpcarryoutmoreexperimentsonMars.D.ItwillgetmoreinformationaboutthereasonsforMarsquakes.14.WhatisHoffman’sattitudetowardsthisexplorationoftheInSight?A.Confident. B.Satisfied.C.Concerned. D.Frightened.15.WhatisthedifferencebetweenInSightandNASA’sCuriosityrover?A.Thesize. B.Thedesign.C.Thespeed. D.Thetask.第二節(jié)(共5小題；每小題2分，滿分10分)根據(jù)短文內(nèi)容，從短文后的選項(xiàng)中選出能填入空白處的最佳選項(xiàng)。選項(xiàng)中有兩項(xiàng)為多余選項(xiàng)。Ambition(志向,抱負(fù))isanecessaryqualityinlife.Itistheforcewhichdrivesusontousewhatevertalentwehavegot1,thesetalentswillnotbeusedforourownandothers’benefit.Withoutambitionwearejustjellyfishthatflopthoughlife.Weonlyreacttoevents:wedon’ttrytocontrolthem.

2.Firstofall,itcanbeunrealistic.Wemaynotbeabletoseethelimitsofourownabilities,sowedoambitiousthingsthatarecompletelybeyondus.Somepeoplecanseeourgoodqualitiesandourlimitationsobjectively.Theymaytellusthatwehaven’ttheability.Werefusetotaketheirevaluation.Wekeepontrying.Manyyearsandmanydisappointmentslaterweareforcedtoaccepttheirjudgment.Butwhatawasteoftimeourill-foundedambitionhascausedus!

Besides,ourambitioncanbetooconcentrated.Wedevoteourattentiontoonenarrowaim,suchasgettingdistinctionsinoursciencesubjects.Everythingthatmaydrawusawayfromthisaimiscutoutofourlives.Intheendwegetourdistinctions.Butweareisolatedbeingswhoonlycareaboutparticularexaminations.Andweprobablywon’tmakegoodscientists3.

Andourambitioncanbelimitedtolifelessobjectives.4Personswhofeelinferiortrytomakeupbyseekingtherespectofothersthroughowningtheseartificialsignsofworth.

5But,likeallblindforces,itmustbedirectedifnottocausedisaster.

A.Still,ambitioncanhaveseveraldisadvantagesB.BecauseourambitionmaymakeusamongselfishpeopleC.UnlesswehavegotsomedegreeofambitionD.sincewedon’thavethebreadthofviewnecessaryforgreatersuccessE.AmbitionisnecessaryinthelivesofindividualsF.AslongastightlycontrolledbytheheadandtheheartG.Wewanttogainmoney,orpower,ormembershipofsomecircles第三部分語言運(yùn)用(共三節(jié)，滿分40分)第一節(jié)完形填空(共15小題；每小題2分，滿分30分)閱讀下面短文，從短文后各題所給的A、B、C和D四個(gè)選項(xiàng)中，選出可以填入空白處的最佳選項(xiàng)。Forthousandsofyears,peoplehaveknownthatthebestwaytounderstandaconceptistoexplainittoothers.“Whileweteach,we1,”saidRomanphilosopherSeneca.Nowscientistsarebringingthisancientwisdomup-to-date.They’re2whyteachingissuchafruitfulwaytolearn.

Researchershavefoundthatstudentswhoteachothersworkharderto3thematerial,andapplyitmore4.Studentteachersscorehigheronteststhanpupilswho’relearningonlyforthemselves.Buthowcanchildren,5learningthemselves,teachothers?Oneanswer:Theycanteachyoungerkids.Somestudieshavefoundthatfirst-bornchildrenaremore6thantheirlater-bornsiblings(兄弟姐妹).ThissuggeststheirhigherIQsresultfromthetimetheyspendteachingtheirsiblings.

Noweducatorsareexperimentingwithwaysto7thismodeltoschoolwork.Theyengagecollegeundergraduatestoteachcomputersciencetohighschoolstudents,whothen8instructmiddleschoolstudentsonthetopic.Butthemostcutting-edgetoolisthe“teachableagent”—acomputerizedcharacterwholearns,tries,makesmistakesandasksquestionsjustlikeareal-world9.Computerscientistshavecreatedananimated(動(dòng)畫的)figurecalledBetty’sBrain,whohasbeen“taught”aboutsciencebymiddleschoolstudents.StudentteachersaremotivatedtohelpBetty10certainmaterials.Whilepreparingtoteach,theyorganizetheirknowledgeandimprovetheirunderstanding.Andastheyexplaintheinformationtoit,theyidentifyproblemsintheirown11.

Feedbackfromtheteachableagent12improvestheteachers’learning.Theagents’questionsdrivestudentteacherstothinkandexplainthematerialsindifferent13,andwatchingtheagentsolveproblemsallowstheemotionsoneexperiencesintoaction.14,it’stheemotionsoneexperiencesinteachingthathelplearning.Studentteachersfeel15whentheirteachableagentsfail,buthappywhenthesepupilssucceedastheygainprideandsatisfactionfromsomeoneelse’sachievement.

1.A.learn B.doubtC.grow D.practice2.A.valuing B.provingC.questioning D.assuming3.A.prepare B.preserveC.exchange D.understand4.A.officially B.effectivelyC.fluently D.carefully5.A.still B.even C.though D.once6.A.curious B.energeticC.independent D.academic7.A.add B.applyC.offer D.show8.A.aswell B.atonceC.inturn D.ofcourse9.A.teacher B.parent C.sibling D.pupil10.A.arrange B.mark C.master D.link11.A.thinking B.readingC.inspiration D.guidance12.A.shortly B.hardlyC.rather D.further13.A.ways B.cases C.places D.orders14.A.Inall B.AfterallC.Aboveall D.Forall15.A.satisfied B.sickC.pleased D.upset非選擇題部分第二節(jié)語篇語法填空(共10小題；每小題1分，滿分10分)閱讀下面材料，在空白處填入適當(dāng)?shù)膬?nèi)容(1個(gè)單詞)或括號(hào)內(nèi)單詞的正確形式。Currently,bothwomenandmen1.__________(surround)bymagazinesandwebsitesfulloftipsaboutdieting,exerciseandfashion.Gonearethedays2.__________allmenhadtothinkaboutwearinganicesuittobesmartandhandsome.Thingshavechanged.

Now,asurveyhassuggestedthat80%ofmenadmit3.__________(be)unhappyabouttheirbody.Thebiggestbodyissuesfor4.__________(they)werebeerbelliesandlackofmuscles.Somethinkitisbecause5.__________thepressureofinfluenceofrolemodelsweseeonTVandin6.__________(magazine).Peopleendupwithaperceptionofwhattheperfectbodyshouldlooklike.ButnoteverybodywantstoputintheefforttohaveperfectmuscleslikeArnoldSchwarzenegger.Anopportunisticdesignerhaseveninventedamuscle-enhancingshirt7.__________(make)thebuyerlookmoreofastrongman.

ButJoeWarner,theformereditorofMen’sFitnessmagazine,thinksthemuscle-enhancingshirtisjust8.__________trick.Hethinksmanypeopleinthecountryareoverweightandshouldaccepttheyneedtodomoreexercise9.__________(regular).Exerciseisalwaysgood.Butwemustn’tforgetbeautyisonlyskindeep.Characteris10.__________(important)thanappearance.

第四部分寫作(滿分40分)第一節(jié)應(yīng)用文寫作（15分）結(jié)合課文主題使用本單元詞匯與句型,根據(jù)提示寫一篇50詞左右的短文。1.那位老師和一些學(xué)生在參觀一家工廠。(alongwith)2.工廠墻上的開關(guān)孩子們是夠不到的。(beyondone’sreach)3.在那里他們看到一個(gè)能精確控制溫度的裝置,這個(gè)裝置附帶有使用說明書。(accurately,attach)4.說明書提醒人們不要讓那個(gè)裝置傷到自己。(injure)第二節(jié)故事續(xù)寫（25分）閱讀下面材料,根據(jù)其內(nèi)容和所給段落開頭語續(xù)寫兩段,使之構(gòu)成一篇完整的短文。續(xù)寫的詞數(shù)應(yīng)為150左右。OneSundaymorning,GeorgeThomas,abakerinasmallNewEnglandtownwaswalkingthroughtownwhenhesawayoungboycomingtowardhim,swingingabirdcageintheair.Onthebottomofthecage,therewerethreelittlewildbirdsshakingwithcoldandfear.GeorgeThomasstoppedtheboyandaskedhimwhathegotthere.

Theboywashappyandtoldhimthattherewerejustsomeoldbirdsinthecage.Whenthebakeraskedhimwhathewoulddowiththeoldbirds,theboysaidcasuallythathewantedtotakethebirdshomeandplaywiththem.Hewouldpullouttheirfeatherstomakethemfight.Hewouldhaveareallygoodtimebecausehewouldenjoywatchingthese.

GeorgeThomaswasshockedbywhattheboysaid.Howcouldaboybesorudetowildanimals?Sohecontinuedtoasktheboywhathewoulddotothebirdswhenhegottiredofthem,becausehewassuchanaughtyandcruelboythathewassuretobetiredofthemsoonerorlater.Theboylaughedandsaidthathegotacat,whichlikedbirds,sohewouldgivethebirdstohiscat.Thebakergotmoreworriedanddecidedtohelpsetfreethepoorbirds.Soheasked,“Howmuchdoyouwantforthosebirds,son?”

Theboylookedathiminsurprise,wonderingifthebakerreallywantedtobuythem.Helaughedandremindedthemanthattheywerejustplainoldfieldbirds.Theydidn’tsingandtheywerenotevenpretty.However,thebakerinsistedandcontinuedtoaskhimhowmuchmoneyhewantedforthebirds.Theboystaredatthebakerasifhewerecrazyandsaid,“$10?”Paragraph1:Thebakerreachedinhispocket...Paragraph2:Thebakerpickedupthecage.參考答案：【閱讀理解】A:1-3ADAB:4-7BDCDC:8-11DDCBD:12-15CBCD【七選五】1-5CADGE【完形填空】1-5ABDBA6-10DBCDC11-15ADACD【語法填空】aresurroundedwhenbeingthemofmagazinestomakearegularlymoreimportant【寫作】【應(yīng)用文】Theteacher,alongwithsomestudentsisvisitingafactory.Theswitchonthewallofthefactorywasbeyondthechildren’sreach.Theysawadevicethatcanaccuratelycontrolthetemperature,towhichthedirectionswereattachedtheyremindpeoplenottoinjurethemselveswithit.

【讀后續(xù)寫】Paragraph1:Thebakerreachedinhispocketandtookoutatendollarbill.Heplaceditintheboy’shand.Theboygraspedthemoneyfirmlyasifhewasafraidthatthebakerwouldchangehismind.Inaflash,thenaughtyboywasgone.Thebakerlookedattheboywalkingawayandshookhishead.

Paragraph2:Thebakerpickedupthecage.Andhegentlycarriedittotheendofthealleywheretherewasatreeandagrassyspot.Settingthecagedown,heopenedthedoor,andbysoftlytappingthebarspersuadedthebirdsout,settingthemfree.Thebakerwatchedthebirdsflyinginthesky,smiling.Hetooktheemptybirdcagehome.

Unit3Startingout&Understandingideas一、單詞拼寫1.Hehasa_____(渴望)forsuccessthoughhehasfailedmanytimes.2.Weallthoughtshewasacharming,intelligent,andvery_____(有能力的)youngwoman.3.Youcanchargeyourphonewiththeextra_____(電池)whereveryouare.4.Itasksyoutoactlikewater—tobe_____(柔韌的)aswellasstrong.5.Thisdevicehelpsmakevirtual_____(現(xiàn)實(shí))amoreusableandaccessibletechnology.6.Youcangoanywhereandstillthe_____(指南針)pointsnorthorsouth.7.Suddenly,awhitelight_____(射出)towardsmyeyes,andIcouldseenothing.8.Whenhecameintothehouse,Drago_____(按)abuttonandthedoorclosed.用方框內(nèi)短語的適當(dāng)形式填空inaddition,inone'sopinion,intermsof,leadto,lookdown,neversaynever1.

___________,becauselimits,likefears,areoftenjustavirtualexistence.2.

Thetrafficaccidenthas

___________

36passengers'dying,and32passengers'beinginjured.3.

___________

money,nooneseemstobericherthanthegentleman,butdoesthatmeanhappiness?4.

___________,youarenotthesuitablepersontodothework.So,Isuggestyoufindanother.5.

We

___________

fromthetopofthemountain,andfoundtheriverwindingalongtheplain.6.

Itisabookworthreading,and

___________,itisquiteacheapone.三、閱讀理解

Dogsareourbestfriends.That'sespeciallytrueafteradisaster,suchasanearthquake.Whenbuildingsfalldown,search-and-rescuedogshelpfindtrappedpeople.Dogs'amazingnosescanpickupthesmellofsurvivors.Nowscientistshavedevelopedanelectronictoolthatdoesthesamething.It'stakingsmelldetection(探測)toawholenewlevel.

Thenewinventionisasortofelectronicnose,whichcandetectextremelylowlevelsofmanycompounds(化合物)frompeople'sskin.Thisisn'tthefirsttimeengineershavedevelopedsuchanobject.Earliermodels,however,havebeenbulkyandexpensive.Theycouldnotdetectlowlevelsoftargetcompoundseither.Thenewoneisinexpensiveandsmallenoughtofitinsidehand-heldequipment.

Theelectronicnosecandetectextremelyslightsmellofmorethanonecompoundatthesametime."Beingabletodothis,insuchasmallobject,isthesignificantdiscovery,"saysSotirisE.Pratsinis,ProfessorofProcessEngineeringandMaterialsScienceattheSwissFederalInstituteofTechnologyinZurich.Histeamtesteditinspecialspaces.Theywerelikethesmallspaceswherepeoplemightbetrapped.Chemicalsgivenoffbythevolunteersbuiltupinside.Theelectronicequipmentdetectedthosecompoundsatunbelievablylowlevels.

Theresultsweregoodnewsfortheresearchteam.Buttheymaybenotforourfour-leggedfriends,whocouldsoonbeoutofajob."Ideally,thistechnologycouldreplacesearch-and-rescuedogs,"Pratsinissays.

StephenTaylor,anelectricalengineer,agreesthatthenewtechnologyhassomebenefitsoverdogs.Still,hethinksitmaybetoosoontohaveourtrustyfriendsretire.Hesuspects,"Iforeseethatsuchanobjectcouldaddtothefineworkdonebythedogs."Tayloralsopointsoutsomepotentiallimitationsofthenewinvention."E-nosesareuseful,butcanbeverylikelytobeaffectedbyunstablereadingsandinterruption,"hesays.1.Whydoestheauthortalkaboutdogsatthebeginning?

A.Tocatchthereaders'attention. B.Tointroducethetopicaboute-noses.

C.Toshowwhatsearch-and-rescuedogsdo. D.Toaddbackgroundinformationfordiscussion.

2.Whichofthefollowingbestexplains"bulky"underlinedinParagraph2?

A.Complex. B.Fragile. C.Handy. D.Large.

3.WhatisParagraph3mainlyabout?

A.Whate-noses'workingprincipleis.B.Howe-nosesaremade.

C.Whatdifferencesbetweendogsande-nosesare.

D.Howpowerfule-nosesare.

4.WhatdoesStephenTaylormean?

A.Dogsande-nosescouldworktogether. B.Search-and-rescuedogswillretiresoon.

C.E-nosesaremorereliablethannosesofdogs. D.Dogsarebetteratfindingouttrappedpeople.四、閱讀下面短文,在空白處填入1個(gè)適當(dāng)?shù)膯卧~或括號(hào)內(nèi)單詞的正確形式。

Chinahasonceagainprovedits①_____(able)tochangetheworldwiththe"newfourgreatinventions":high-speedrailways,electronicpayments,sharedbicyclesandonlineshopping.

They'rerelatedtoChina'shigh-techinnovation(創(chuàng)新),

②_____hasimprovedthequalityofpeople'slives,accordingtoasurvey③_____(make)bytheBeltandRoadResearchInstituteofBeijingForeignStudiesUniversity.

"Mywalletisnolongerinuse.IcanbuyandeatwhateverIwantsi